package com.loujianwei.test;

import org.aspectj.bridge.Message;

class dog {
	
}
public class aa extends dog {

	public static void main(String[] args) {
		aa ab = new aa();
		dog aDog = new dog();
		dog abb = new aa();
		System.out.println(boolean(ab instanceof dog));
		System.out.println(aDog instanceof aa);
		System.out.println(abb instanceof dog);
	}
}
